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Processing Materials

Processing Materials for Packaging

four categories of materials paper & paperboard metals glass plastics
applications for wood in packaging barrels crates nailed or wire bound boxes pallets & skids
what makes up wood? 50% cellulose 30% lignin 20% carbohydrate
what gives paper its structure ? cellulose
what is lignin ? brown, sticky substance
what is the thickness of paper? .012" or less
what is the thickness of paperboard ? greater than .012"
what is thickness referred to as ? points
1 point = .001"
what happens when paper gets wet ? it looses its strength
mechanical doesn't use chemicals---uses all wood low brightness & strength usually combined with other pulps
chemical sulfate (kraft) sulfite soda higher quality & stronger
what is the most widely used chemical? sulfate (kraft)
semichemical cook wood in chemicals grind in dise refiner not used much--- except for media
what is the cheapest way to make pulp? mechanical
what is the speed of paper making? 300 ft/min
what is the web width? 3o ft
what is the production? 800 miles/day
what are the two types of paper making machines ? fourdrinier cylinder (cross section of cylinder board)
which is for paperboard only? cylinder
which can be used for paper or paperboard? fourdrinier
what is the general procedure for paper making? screen squeeze dry
calendering like ironing paper run through stack of rollers increases density & smoothness important for strength & print quality
what is the basis weight for paper? lbs/3000 sq ft
what is the basis weight for paperboard? lbs/1000 sq ft
what is thickness for paper measured in ? inches
what is thickness for paperboard measured in? points
Advantages for paper/paperboard renewable recyclable inexpensive easily printed on
Disadvantages loses strength when wet porous to moisture & oxygen combustible
types of paperboard clay coated news back solid bleached sulfate
what appearance does solid bleached sulfate give? cleanliness
what are some basic design styles tube tray hybrid
solid fiberboard several piles of paperboard laminated together
uses of solid fiberboard shippung containers dividers corner supports
basic construction of corrugated paperboard medium & linerboard
three important features: height of flutes distance between flute peaks type of liner board
uses of A,B,C flutes & double & triple walls shipping boxes point of purchase display
uses of E & F flutes retail boxes for small appliances or bulky items fast food packaging
RSC regular slotted container
3 ways to make pulp mechanical chemical semichemical
what is thickness referred to as? points
four categories of materials paper & paperboard metals glass plastics
four categories of materials paper & paperboard metals glass plastics
Created by: rudolph.beukes